The transmission comprises at least three induction systems which are arranged axially one after the other or coaxially one above the other and which can be rotated about a common axis of rotation (4). The induction system in the middle is in each case provided in the side faces with a winding which are connected to one another and are executed in such a manner that the magnetic rotary fields which arise by means of relative movement between the induction system in the middle and one adjacent induction system effect a relative movement between the induction system in the middle and the other adjacent induction system in order to produce an output movement.
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1. A dynamo-electric transmission wherein at least a first, a second and a third induction system are arranged coaxially one above the other and can be rotated about a common axis of rotation; and wherein the second induction system is arranged in the middle between the first and third induction system, wherein a first and second winding (5, 6) is arranged in the second induction system, wherein the first winding is directed to the first induction system and the second winding is directed to the third induction system, wherein the first and second windings are electrically connected to one another, and that the first, second and third induction systems are rotably arranged with respect to one another and are built such that one of either: the first induction system induces an electric current in the first winding, wherein the electric current flows through the second winding and the second winding provides the electric current onto the third induction system such that an activating force is induced onto the third induction system; or the third induction system induces an electric current in the second winding, wherein the electric current flows through the first winding and the first winding provides the electric current onto the first induction system such that an activating force is induced onto the first induction system.
2. A transmission in accordance with
3. A transmission in accordance with
4. A transmission in accordance with
5. A transmission in accordance with
6. A transmission in accordance with
7. A transmission in accordance with
8. A transmission in accordance with
9. A transmission in accordance with
10. A transmission in accordance with
11. A transmission in accordance with
12. A transmission in accordance with
13. A transmission in accordance with
14. A transmission in accordance with
15. A centrifugal pump comprising a transmission in accordance with
16. A centrifugal pump comprising a transmission in accordance with
17. A centrifugal pump comprising a transmission in accordance with
18. A centrifugal pump comprising a transmission in accordance with
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The invention relates to an electrodynamic transmission and to a centrifugal pump with a transmission of this kind.
The object of the invention is to provide an electrodynamic transmission which is simply constructed.
The advantages which can be achieved with the invention are substantially to be seen wherein no external electrical auxiliary or control energy is required and wherein the transmission can be driven in different ways.
FIG. 1 is a view of an embodiment of a transmission in accordance with the invention;
FIG. 2 is a section along the line II--II in FIG. 1;
FIG. 3 is a cross-section of another embodiment of the transmission in accordance with the invention;
FIG. 4 is a partial section of an embodiment of a centrifugal pump in accordance with the invention and
FIG. 5 is a partial section of another embodiment of a centrifugal pump in accordance with the invention.
As FIGS. 1 and 2 show, the electromagnetic transmission contains an inner pole wheel 1, an outer pole wheel 2 and an intermediate armature 3 which have a common axis of rotation 4. The inner pole wheel 1 is designed in the manner of a permanent magnetic pole wheel for synchronous machines and has p1 pole pairs. The outer pole wheel 2 is designed in the manner of a permanent magnetic outer rotor for a synchronous machine and has p2 pole pairs. The outer pole wheel 2 surrounds the intermediate armature 3. The intermediate armature 3 is designed in ring shape and surrounds the inner pole wheel 1. The intermediate armature 3 consists of a ferromagnetic material. First and second multiple phase windings 5, 6 are arranged at the inner and outer periphery of the intermediate armature 3. The first winding 5 has a pole number p1 and the second winding 6 has a pole number p2. The windings 5, 6 are designed in such a manner that a magnetic rotary field which acts on the one winding produces a magnetic rotary field in the other winding.
It is pointed out that instead of the permanent magnetic pole wheels, armatures with a multiple phase alternating current winding, e.g. a short circuited cage rotor winding, can also be used. It is likewise possible to arrange this alternating current winding in a ring winding or a disc winding.
FIG. 3 shows an embodiment which contains disc-shaped pole wheels 11, 12 and a ring-shaped intermediate armature 13 which have a common axis of rotation.
It is assumed that the pole wheels 1, 2; 11, 12 are rotatably arranged and that the intermediate armature 3; 13 is stationarily arranged. Through the driving of the inner pole wheel 1, a relative movement results between the pole wheel and the intermediate armature. Electric currents are thereby induced in the first winding 5 of the intermediate armature 3. These produce a rotary field in the second winding 6. This rotary field in turn causes a relative movement between the intermediate armature 3; 13 and the outer pole wheel 2; 12 so that the outer pole wheel rotates.
Through the choice of the pole pairs pl and p2 and the design of the winding, heads between the first and the second winding the ratio of the relative speeds and the direction of rotation and hence the transmission ratio of the transmission can be determined. The transmission can be operated in different ways depending on which of the transmission members 1, 2, 3; 11, 12, 13 is stationarily arranged and which is mechanically driven. If the intermediate armature 3, 13 is driven, then a transmission results with two secondary drive speeds of rotation.
The use of the above-described electromagnetic transmission in a centrifugal pump can be seen in FIGS. 4 and 5. Multiple stage centrifugal pumps require a relatively high run-in pressure at the entry of the first stage in order to prevent cavitations in the latter. For this, feeder pumps or special suction wheels in different embodiments can be used which are driven by means of mechanical converters, e.g. a planetary transmission.
As FIG. 4 shows, the inner pole wheel 1 is mounted on the pump shaft 21. The outer pole wheel 2 is arranged in the rotor 22 and the intermediate armature 3 is mounted in the pump housing 23.
In the embodiment in accordance with FIG. 5 the inner pole wheel 11 is mounted on the pump shaft 21 and the outer pole wheel 12 is arranged at the rotor 22. The intermediate armature 13 is mounted at the pump housing 23.
The transmission comprises at least three induction systems 1, 2, 3 which are arranged axially one after the other or coaxially one above the other and which can be rotated about a common axis of rotation 4. The induction system 3; 13 in the middle is in each case provided in the side faces with a winding 5, 6 which are connected to one another and are executed in such a manner that the magnetic rotary fields which arise by means of relative movement between the induction system 3; 13 in the middle and one adjacent induction system 1, 11; 2, 12 effect a relative movement between the induction system in the middle and the other adjacent induction system in order to produce an output movement.
Patent | Priority | Assignee | Title |
11056955, | Sep 23 2016 | Rolls-Royce Deutschland Ltd & Co KG | Aircraft turbine with counter-rotating propellers |
6762523, | Aug 11 1999 | The Swatch Group Management Services AG | Continuously variable electromagnetic transmission |
6949854, | Mar 16 2001 | Method and apparatus for a continuously variable-ratio transmission | |
7791235, | Dec 22 2006 | General Electric Company | Variable magnetic coupling of rotating machinery |
7880355, | Dec 06 2006 | General Electric Company | Electromagnetic variable transmission |
8063526, | Mar 17 2006 | Rolls-Royce plc | Magnetic gearbox arrangement |
8210980, | Jan 20 2010 | Orbital magnetic speed change | |
8482171, | Jan 05 2009 | Rolls-Royce plc | Magnetic gear arrangement |
8546988, | Aug 08 2008 | Rolls-Royce plc | Magnetic gear arrangement |
8593026, | Aug 08 2008 | Rolls-Royce plc | Variable gear ratio magnetic gearbox |
9273755, | Mar 27 2009 | Ricardo UK Limited | Method and apparatus for balancing a flywheel |
9391489, | Nov 17 2010 | Ricardo UK Limited | Magnetic coupler having magnets with different magnetic strengths |
9482235, | Jun 20 2008 | INGERSOLL-RAND INDUSTRIAL U S , INC | Gas compressor magnetic coupler |
9704631, | Mar 27 2009 | Ricardo UK Limited | Flywheel |
9718343, | Apr 20 2011 | Ricardo UK Limited | Energy storage system having a flywheel for a vehicle transmission |
Patent | Priority | Assignee | Title |
1476458, | |||
2594931, | |||
3645650, | |||
4065234, | Dec 22 1975 | Nihon Kagaku Kizai Kabushiki Kaisha | Magnetically driven rotary pumps |
5501582, | Jan 26 1994 | CARBONE LORRAINE EQUIPEMENTS GENIE CHIMIQUE | Magnetically driven centrifugal pump |
5554903, | Oct 14 1991 | Rotary electric machine | |
5606210, | Sep 15 1995 | Power generator by magnetically repulsing magnetic shuttles | |
DE19631824A1, | |||
DE2819793, | |||
DE840411, | |||
DE973739, | |||
FR403689, |
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Apr 22 1999 | Sulzer Innotec AG | (assignment on the face of the patent) |
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